The other day I noticed that my idle rpm has gone up to about 1100 rpms.
My cars vtec is set at 6450 rpms and the crossover is so smooth its almost non-existent, but after I noticed the higher idle rpm the car somewhat lags from 5500-6500 and then the vtec kicks in pretty hard. Seems kinda strange to me. Tried replacing all the vacuum lines off the manifold to see if it would do anything, but no results. No CEL's either. Any ideas?

Thanks in advance.

Btw the motor has JUN cams and Shawn did the tuning a while back, in case ?'s about the high vtec crossover.